The Apostolic Nunciature to the United States, sometimes referred to as the Vatican Embassy, is the diplomatic mission of the Holy See to the United States. It is located at 3339 Massachusetts Avenue, Northwest, Washington, D.C., in the Embassy Row neighborhood. Since 2016, the papal nuncio has been Cardinal Christophe Pierre.

Embassy Row is the informal name for a section of Northwest Washington, D.C., with a high concentration of embassies, diplomatic missions, and diplomatic residences. It spans Massachusetts Avenue N.W. between 18th and 35th street, bounded by Scott Circle to the south and the United States Naval Observatory to the north; the term is often applied to nearby streets and neighborhoods that also host diplomatic buildings, such as Kalorama.